Dumping truck



.Euiy 2]., 1925.

A. W. SPANKUS ET AL DUMPI NG TRUCK Filed DeC. 14, 1920 2 Sheets-Sheet l /Z ORNE YS.

July 21, 1925. 1,546,414

A. W. SPANKUS ET AL DUMPING TRUCK Filed Dec. 14. 1920 2 Sheets-Sheet 2 MM/ o, y@ im W l mmf/Tom MJ, ATTORNEY UNITE STAT-ES Lettera ADOLPH 1V. SPANKUS AND HENRY UTZAT, OF LVIILWAUKEE, WISCONSIN.

DUIJIPING TRUCK.

Application led December 14, 1920.

To all whom 7'25 may conce/fn.'

Be it known that We, inoirrr l/V. SPAN- nos and Hnnnr Urn/vr, citizens of the United States, residing at lvililwaukee, county of Milwaukee, and State of lVisconsin, have invented new and useful linprovements in Dumping Trucks, of which the following is a specification.

This invention relates to dumping trucks and is particularly directed to that type of truck in which a. hopper is pivoted upon a main body and is tilted int-o dumping position.

Objects of this invention are to provide a simple and eflicient mechanism for tilting the hopper to dumping position; to avoid duplication of parts and needless exposure of the hoisting mechanism to breakage; to provide an inexpensive and easily repaired mechanism; and to provide a hoisting` mechanism which is preeminently adapted for heavy duty.

Further objects are to provide a hoisting mechanism equipped with gears having tempered teeth, such teeth conveniently being of a` different temper from the body of the gear; to provide a gear for hoisting trucks which has removable teeth; to provide a hoisting truck mechanism in which the parts most likely to become broken may be replaced by unskilled labor; and to provide hoisting truck mechanism in which the gear teeth may be separatelytempered without necessitating expensive tempering operations for the entire gear body.

Embodiments of the invention are shown in the acompanying drawings in which:

Fig. 1 is a fragmentary side elevation of a truck embodying the invention, showing in dotted lines the position the hopper assumes when in eXtreme dumping position.

Fig. 2 is aplan view of a structure shown in Fig. 1 with the body removed to more clearly illustrate the construction of elevating mechanism.

Fig. 3 is a fragmentary sectional View on the line 3*-3 of Fig. 1.

Fig. 4 is a side elevation of the segmental gear and driving pinion.

Fig. 5 is a perspective view of a. modified form of seomental .Gear and drivin@ inion.-

b o n The truck comprises amain body or chassis 1 upon which the hopper 2 normally rests. rIhe hopper is pivotally mounted adjacent the rear of the body 1 so as to -allow such hopper to move into Vertical Serial No. 430,657.

position, as indicated in dotted lines in Fig. 1, in its extreme dumping position. The pivotal mounting'may convenient-ly be secured by means of a pair of bearings 4 and 5 secured upon the side bars of the chassis 1, and a bracket 3 secured to the under side of the hopper. These members are pivotally oined by means of a pintle 6 which may extend from one side of the machine completely across to the other side thereof.

fr pair of segmental gear members 7 are secured to the hopper in axial alignment with the pivotal' mounting and may conveniently be formed integrally with the bracket 8. lThese segmental members are provided with a series of aperturesS extending from their outer periphery inwardly into the flanged portion of these segmental members. A transverse shaft 9 is mounted in suitable bearings formed in pairs, 1() and 11. A portion at least of such bearings may conveniently be made integrally with the cross supporting member 12 which is secured at 13 upon each side to the side bars of the chassis 1. This transverse shaft is provided `with a pair of driving pinions 13 and 14 having pin teeth 15 which are designed to mesh with the openings 8 in thel segmental members. A driven worm-wheel 16 is centrally secured upon the transverse shaft 9 and receives its power thru the medium of a. single longitudinal shaft 17 and a Worm 18. This longitudinal drive shaft 17 may be supported at one end in the transmission casing 19and at the otherend in a pair of bearings 2O and 21 mounted upon opposite sides and closely adjacent to the worm 18.

The elevating mechanism may conveniently be diven by the engine through the medinm of the shaft 17, worm 18, and worm wheel 16. A clutch 22, underthe control of a hand lever 23 adjacent the'drivers seat,

serves to'connect or disconnect the engine and shaft 1.7. lf desired, provision may be made for manually elevating the hopper by providing a cross shaft 24 adapted to receivea hand crank at 25 and connected with a longitudinal drive shaft` 17 by means of a pair of beveled gears 26.

A modified form of construction is illustrated in 5 in which the openings 8 and the pins 15 are arranged in cooperative staggered relation. This construction se cures additional strength over that disclosed in detail in Figs. 3 and 4 and may advan tageously be used where heavy duty is imposed L,upon ,the hoisting mechanism, lt Will be noted that by this staggered arrangement of pins a smooth driving is secured. i

In both forms of this invention, the driving pinion 14, or 13', is provided With a series of threaded openings extending in- Wardly from its periphery'. "A series of removable, hardened, round'pins 27 are corre- ,spp 'ondinglyithreaded and arenscrevved into the threaded openings, ,a shoulder 28` conveniently4 forminga `seat por. stop for the threaded pin 27., These pins 27 are hardened and Itenipered to Vsecure maximum ,A Wearing qualities ,2l-nd, asthey are distinct fromhthe body, no1-tionT Qf ,the ,driving ,pinion7 Sash tempering or hardening maybe readily and heaplrdoee- The belyroftions ,071 ,the driving p inions andsegmental members may ormay notl be of hardened material.

vByzproviding thesedreinovable pin teeth, an elevating'mechanism hasbeen provided in which a `brokenorr injured toothimay be readily removedt, and rerled byA e, Der tooth. It is to beA notedntlhat by providing these l'removable teethtempering is greatly cheapened and facilitated ashit Iis not necessary to temperthe entire pinion. Alt is also to bernoted thatif Aartovoth.becomes broken .orlvdamagechit may be replaced,byunslilled labor ivithout sending the truck to a repair shop and requiring extensive and costly Work.. e

lt Will further bev noted that byproviding a s'inglegdrive shaft anda singlev driven Worrnmheel, broth unnecessary duplication ef mechanism is avoided,and also unnecessaryand dangerous*exposure of the elevatingy mechanism is avoided.

l/Ve claim; l, l l. ,ln a dumping truck having a chassis, a hopperY pivotally mounted acentthe rear end `of said chassis and dumping mechanism comprising a pairof segmental Vgearsneach Vsecured to opposite sides of saidy hopper, a

pair of pinions each meshing one with said `segmental gears, a transverseshaftforsaid pinions, a Worm yWheel on said transverse shaft, a longitudinal power shaft and a vWorm on said longitudinal power shaft meshing With said Worm Wheel, a transverse bearing member secured to Said chassis and Aprovided with a support for said transverse ed on said chassis, a pair of segmental gears secured to said hopper, transveigse shaft, a pair of pinions on said shaft each meshing Witlrone of said segmentalgears, a Worm Wheel on said shaft, a llo-ngitudinal vpower shaft, a yworm on saidspoxver shaft ,meshing With saidA Worm Wheel, a ,supporting meme ber mounted on ,saidvchas'sis transversely thereof, a pair of, transversebeariiig members at each end of said supporting member and each disposed onropposite sides of their corresponding pinionsyand a pair .of bearing'meinbers intermediate of the ends lof said supporting member and each'disposed at opposite ends of said Worm.A

l. In a dumping truck including a chassis and a hopperLthe combination yvit'h a pair of segmental gears pivotavlly secured to said chassis and integrally secured together'to provide a platform for said hopper, Va pair of pinionseach meshing with a segmental gear, a transverse shaft forsaid pinions, a Worm Wheel on saidlshafua power shaft, a Worm on said power shaft meshinfgwwith said Worm Wheel, a support forfsaid trans,- verse shaft and Worm,said support being provided With a pair of hearings for each of said pinions. V, Y l y l l a,

4l. ln` audumpin'g,truclg,having a. chassis and a hoppegthe combinationuivith a pair ,of segmental gea1's,feachdisposed uponfop'- pcsite sides of said chassis and `S'C'u'redtofgether ltivprovide a platform forsa'idhopfp'er and provided iyitha pivotal connection said chassis, a pair Aof pinions each hih'ffg with one of said gears, a transverse shaitlfor said pinion, andina support, for said shaft, said supporty being 'provided with bearings for said vshaft u'po'neach side `of each of said p'inions. w 7 i ,Y sa., A. anorn WgsraNKUs HENRY UTZAT. 

